ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers a private ADHD assessment but it's a lengthy wait. Some people reported waiting three years. GPs may refer patients to private clinics or prescribe medications in a shared care arrangement https://simonclsxc.eedblog.com/29444598/what-adhd-assessment-private-experts-want-you-to-be-educated